U.S. patent application number 11/435192 was filed with the patent office on 2006-12-07 for hemostasis flushing device.
This patent application is currently assigned to Wilson-Cook Medical Inc.. Invention is credited to Vihar C. Surti.
Application Number | 20060276688 11/435192 |
Document ID | / |
Family ID | 36975252 |
Filed Date | 2006-12-07 |
United States Patent
Application |
20060276688 |
Kind Code |
A1 |
Surti; Vihar C. |
December 7, 2006 |
Hemostasis flushing device
Abstract
A hemostasis flushing device includes a main body having a
proximal end and a distal end wherein a lumen extends between the
proximal end and the distal end of the main body. A flush port is
disposed between the proximal end and the distal end of the main
body for passing fluid into or out of the main body. An access port
is disposed along the proximal end of the main body for receiving
an inserted elongate medical device. An attachment port is disposed
on the distal end of the main body for allowing a hemostasis
flushing device to be connected to an endoscope. The attachment
port may also include an annular tip, wherein the annular tip
provides an opening for the elongate medical device to extend into
the accessory channel of the endoscope.
Inventors: |
Surti; Vihar C.;
(Winston-Salem, NC) |
Correspondence
Address: |
BRINKS HOFER GILSON & LIONE/CHICAGO/COOK
PO BOX 10395
CHICAGO
IL
60610
US
|
Assignee: |
Wilson-Cook Medical Inc.
Winston-Salem
NC
|
Family ID: |
36975252 |
Appl. No.: |
11/435192 |
Filed: |
May 16, 2006 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
60681648 |
May 17, 2005 |
|
|
|
Current U.S.
Class: |
600/154 |
Current CPC
Class: |
A61B 1/126 20130101;
A61B 1/012 20130101; A61B 1/015 20130101 |
Class at
Publication: |
600/154 |
International
Class: |
A61B 1/00 20060101
A61B001/00 |
Claims
1. A hemostasis flushing device, comprising: a main body having a
proximal end and a distal end wherein a lumen extends between the
proximal end and the distal end of the main body for inserting an
elongate medical device therethrough; a flush port disposed between
the proximal end and the distal end of the main body for passing
fluid into or out from the lumen of the main body; an access port
disposed along the proximal end of the main body for receiving the
elongate medical device extending through the lumen of the main
body; and an attachment port disposed along the distal end of the
main body wherein the attachment port is connectable to an
endoscope, the attachment port being configured for receiving the
medical device extending through the lumen of the main body.
2. The hemostasis flushing device of claim 1 wherein the attachment
port comprises an annular tip for receiving the elongate medical
device extending through the lumen of the main body, the annular
tip being configured for insertion into an access port of an
endoscope.
3. The hemostasis flushing device of claim 1 further comprising an
infusion device attached to the flush port for flushing fluid
through the flush port.
4. The hemostasis flushing device of claim 1 wherein the flush port
is in fluid communication with the lumen of the main body, the
flush port being configured to permit ingress and egress of fluid
from the lumen of the hemostasis flushing device.
5. The hemostasis flushing device of claim 1 wherein the flush port
includes a seal disposed along an interior surface of the flush
port.
6. The hemostasis flushing device of claim 1, wherein the endoscope
includes a metal insert configured for frictional engagement to the
attachment port of the hemostasis flushing device.
7. The hemostasis flushing device of claim 1 wherein the endoscope
includes a metal insert configured for locking engagement to the
attachment port of the hemostasis flushing device.
8. The hemostasis flushing device of claim 1 wherein the access
port includes a seal disposed along an interior surface of the
access port.
9. The hemostasis flushing device of claim 1 wherein the proximal
end of the main body includes a larger diameter and the distal end
of the main body includes a smaller diameter for facilitating fluid
flow within the lumen of the hemostasis flushing device.
10. A hemostasis flushing device, comprising: a main body having a
proximal end and a distal end wherein a lumen extends between the
proximal end and the distal end of the main body for inserting an
elongate medical device therethrough; a flush port disposed between
the proximal end and the distal end of the main body for passing
fluid into or out from the lumen of the main body, wherein the
flush port comprises a seal disposed along an interior surface of
the flush port; an access port disposed along the proximal end of
the main body for receiving the elongate medical device extending
through the lumen of the main body, wherein the access port
comprises a seal disposed along an interior surface of the access
port; and an attachment port disposed along the distal end of the
main body wherein the attachment port is connectable to an
endoscope, the attachment port being configured for receiving the
elongate medical device extending through the lumen of the main
body.
11. The hemostasis flushing device of claim 10 wherein the
attachment port comprises an annular tip for receiving the elongate
medical device extending through the lumen of the main body, the
annular tip being configured for insertion into an access port of
an endoscope.
12. The hemostasis flushing device of claim 10 further comprising
an infusion device attached to the flush port for flushing fluid
through the flush port.
13. The hemostasis flushing device of claim 10 wherein the flush
port is in fluid communication with the lumen of the main body, the
flush port being configured to permit ingress and egress of fluid
from the lumen of the hemostasis flushing device.
14. The hemostasis flushing device of claim 10, wherein the
endoscope includes a metal insert configured for frictional
engagement to the attachment port of the hemostasis flushing
device.
15. The hemostasis flushing device of claim 1 wherein the endoscope
includes a metal insert configured for locking engagement to the
attachment port of the hemostasis flushing device.
16. The hemostasis flushing device of claim 10 wherein the seal of
the flush port is selected from the group consisting of a duck
bill, membrane and foam.
17. The hemostasis flushing device of claim 10 wherein the seal of
the access port is selected from the group consisting of a duck
bill, membrane and foam.
18. The hemostasis flushing device of claim 10 wherein a plurality
of elongate medical devices are inserted through the lumen of the
main body for facilitating hemostasis.
19. The hemostasis flushing device of claim 10 wherein the proximal
end of the main body includes a larger diameter and the distal end
of the main body includes a smaller diameter for facilitating fluid
flow within the lumen of the hemostasis flushing device.
20. A method of flushing around an elongate medical device, the
method comprising the steps of: providing a hemostasis flushing
device comprising a main body having a proximal end and a distal
end wherein a lumen extends between the proximal end and the distal
end of the main body for inserting an elongate medical device, a
flush port disposed between the proximal end and the distal end of
the main body for passing fluid into the lumen of the main body, an
access port disposed along the proximal end of the main body for
receiving the elongate medical device extending through the lumen
of the main body, and an attachment port disposed along the distal
end of the main body wherein the attachment port is connectable to
an endoscope for receiving the elongate medical device extending
through the lumen of the main body; attaching an endoscope to the
attachment port; inserting an elongate medical device through the
lumen of the main body; connecting an infusion device to the flush
port of the hemostasis flushing device; and flushing fluid through
the flush port into the lumen of the main body to remove bodily
fluid from around the elongate medical device.
Description
RELATED APPLICATIONS
[0001] This application claims priority to provisional application
No. 60/681,648 filed on May 17, 2005, the entire disclosure of
which is incorporated by reference herein.
FIELD OF THE INVENTION
[0002] The present invention relates to the field of medical
devices, and more particularly to medical devices utilizing
endoscopic tools for facilitating hemostasis in a gastrointestinal
passageway.
BACKGROUND
[0003] Conventional medical devices are introduced into a
gastrointestinal passageway through an endoscope for providing
hemostasis during medical procedures. A number of medical devices,
such as clips, snares and needles, are inserted into an accessory
channel of an endoscope to prevent bleeding during these
procedures. However, the amount of bleeding is difficult to contain
due to several factors, such as the size of the medical device, the
patient's coagulation status, and the location of the
gastrointestinal passageway of the ongoing medical procedure.
[0004] Often times, excessive bleeding in the gastrointestinal
passageway of the patient makes it difficult to visualize or access
the particular gastrointestinal passageway after inserting the
medical device directly into the accessory channel of the
endoscope. Additionally, many endoscopes fail to provide visual
access to a target anatomy during bleeding without the use of
additional procedures, such as fluoroscopy. Nonetheless, there is
increased difficulty in visualizing the gastrointestinal passageway
while maneuvering the medical device through the accessory channel
of the endoscope due to bleeding at the connection point between
the medical device and the accessory channel of the endoscope. For
example, when a medical device, such as a bi-polar probe, needle,
and other elongated device, is passed through an accessory channel
of an endoscope the medical device often becomes improperly flushed
around the accessory channel from the excessive bleeding. These
flushing problems can result in leaking around the accessory
channel of the endoscope and the medical device. In addition to
leaking, flushing problems around the accessory channel of the
endoscope can result in blockage from the accumulation of fluids,
such as blood, and lead to other complications. Both blockage and
leaking problems can cause decreased pressure in the corresponding
accessory channel of the endoscope and result in flushing fluid
being delivered to a particular site at a slower rate during
time-sensitive medical procedures.
[0005] Due to the complexity of medical procedures involving
medical devices, physicians often need to repeatedly insert and
remove the particular medical device at different stages of surgery
to permit the delivery of flushing fluid to the target site of the
gastrointestinal passageway. For instance, current procedures may
require a physician to insert a medical device, such as an
injectable catheter, into an accessory channel of an endoscope
during the beginning of a surgical procedure to deliver medicine to
a patient and then subsequently remove the medical device. During
the same procedure, the physician may insert a different medical
device, such as a syringe, into the accessory channel of the
endoscope to deliver fluids to the patient for flushing the target
site of the gastrointestinal passageway. After flushing the target
site, the physician must remove the syringe and then reinsert the
initial medical device being utilized for performing the ongoing
medical procedure. The time required to exchange the medical device
adds significant time to the ongoing medical procedure.
Additionally, it remains difficult to flush the area surrounding
the accessory channel of the endoscope as coagulated blood
continues to build up between the accessory channel of the
endoscope and the medical device.
[0006] It is desirable to provide a hemostasis flushing device that
allows a plurality of medical devices to be easily inserted and
removed from an endoscope during medical procedures to reduce
excessive bleeding. Also, there exists a need for a hemostasis
flushing device that provides for flushing within a lumen of the
device, and provides for flushing around an accessory channel of an
attached endoscope, while providing access and visual clarity of a
target site during medical procedures involving the endoscope.
SUMMARY
[0007] In one aspect of the invention, a hemostasis flushing device
comprises a main body having a proximal end and a distal end
wherein a lumen extends between the proximal end and the distal end
of the main body. The hemostasis flushing device further comprises
a flush port disposed between the proximal end and the distal end
of the main body for passing fluid through the lumen of the main
body. The hemostasis flushing device also comprises an access port
disposed along a proximal end of the main body for receiving an
elongate medical device extending through the lumen of the main
body. An attachment port is disposed along the distal end of the
main body wherein the attachment port is connectable to an
endoscope for receiving the elongate medical device extending
through the lumen of the main body. The multiple ports, such as the
flush port and access port, of the hemostasis flushing device
provides for flushing inside the lumen of the hemostasis flushing
device while also providing for flushing around the elongate
medical device and an accessory channel of the attached endoscope
during medical procedures for facilitating hemostasis.
[0008] In one aspect of the present invention, the attachment port
further comprises an annular tip for receiving the elongate medical
device extending through the lumen of the main body. The hemostasis
flushing device may also include an infusion device attached to the
flush port for flushing fluid through the lumen of the main body.
The flush port is in fluid communication with the lumen of the main
body and is configured to permit ingress and egress of fluid from
the lumen of the main body. The flush port also provides a seal for
sealing the flush port. The hemostasis flushing device may include
a varying diameter wherein the proximal end of the main body
includes a larger diameter and the distal end of the main body
includes a smaller diameter for facilitating fluid flow within the
hemostasis flushing device.
[0009] The hemostasis flushing device may be engaged to the
endoscope by utilizing a metal insert having a lip for connecting
the endoscope to the attachment port of the hemostasis flushing
device to the endoscope. The types of elongate medical devices that
may be inserted into the lumen of the main body include a needle,
probe, clip, syringe or similar elongate medical device. Multiple
elongate medical devices may be inserted into a port of the
hemostasis flushing device for facilitating hemostasis in a blood
vessel. For example, a syringe may be inserted into the flush port
while a probe and a needle are inserted through the access port of
the hemostasis flushing device. The elongate medical device may
also include a hydrophilic coating for navigating the elongate
medical device through the lumen of the main body.
[0010] In another aspect of the present invention, a method of
flushing around an elongate medical device comprises the step of
providing a hemostasis flushing device comprising a main body
having a proximal end and a distal end wherein a lumen extends
between the proximal end and the distal end of the main body for
inserting an elongate medical device. The method also comprises the
steps of providing a flush port disposed between the proximal end
and the distal end of the main body for passing fluid into the
lumen of the main body, and providing an access port disposed along
a proximal end of the main body for receiving the elongate medical
device extending through the lumen of the main body. The method
comprises the additional step of providing an attachment port
disposed along the distal end of the main body wherein the
attachment port is connectable to an endoscope for receiving the
elongate medical device extending through the lumen of the main
body. Additionally, the method comprises the steps of attaching the
attachment port to an endoscope and inserting an elongate medical
device through the lumen of the main body. The method also
comprises the steps of inserting an infusion device to the flush
port of the hemostasis flushing device and flushing fluid through
the flush port into the lumen of the main body to remove bodily
fluid from around the infusion device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Several embodiments of the present invention will now be
described by way of example with reference to the accompanying
drawings, in which:
[0012] FIG. 1 shows a side view of a hemostasis flushing device of
the present invention;
[0013] FIG. 2 shows a cross-sectional view of the hemostasis
flushing device of FIG. 1 of the present invention;
[0014] FIG. 3 shows a partial cross-sectional view of the
hemostasis flushing device of FIG. 1 having an elongate medical
device disposed in a lumen of the hemostasis flushing device of the
present invention;
[0015] FIG. 4 shows a partially sectioned end view of annular tip
of the hemostasis flushing device of FIG. 3 wherein the elongate
medical device extends into an accessory channel of an endoscope of
the present invention;
[0016] FIG. 5 shows a partially sectioned end view of an access
port of the hemostasis flushing device of FIG. 3 wherein the
elongate medical device extends into a lumen of the hemostasis
flushing device of the present invention;
[0017] FIG. 6 shows a perspective view of an endoscope connectable
to an attachment port of the hemostasis flushing device of the
present invention;
[0018] FIG. 7 shows a perspective view of a hemostasis flushing
device engaged to an accessory channel of the endoscope of FIG. 6
of the present invention;
[0019] FIG. 8 shows a partial cross-sectional view of the
hemostasis flushing device engaged to the accessory channel of the
endoscope of FIG. 7 of the present invention; and
[0020] FIG. 9 shows a partial cross-sectional view of the
hemostasis flushing device frictionally engaged to the accessory
channel of the endoscope of FIG. 8 of the present invention.
DESCRIPTION OF THE INVENTION
[0021] The invention is described with reference to the drawings in
which like elements are referred to by like numerals. The
relationship and functioning of the various elements of this
invention are better understood by the following detailed
description. However, the embodiments of this invention are not
limited to the embodiments illustrated in the drawings. It should
be understood that the drawings are not to scale and in certain
instances details have been omitted, which are not necessary for an
understanding of the present invention, such as conventional
fabrication and assembly.
[0022] Referring now to FIGS. 1-5, an embodiment of a hemostasis
flushing device 10 of the present invention is shown. For ease of
reference but without limiting the scope of the claims, the present
invention will be described in connection with an endoscope 200 of
the type shown in FIG. 6.
[0023] In the embodiment of the present invention illustrated in
FIGS. 1-5, the hemostasis flushing device 10 includes a main body
20, an access port 60, an attachment port 40 and a flush port 30.
The main body 20 of the hemostasis flushing device 10 comprises a
proximal end 24 and a distal end 22 wherein a lumen 70 (FIG. 2)
extends between the proximal end 24 and the distal end 22 of the
main body 20. The access port 60 is disposed along the proximal end
24 of the main body 20 for receiving an elongate medical device 100
inserted into the access port 60 and extended through the lumen 70
of the main body 20 (see FIG. 3). The attachment port 40 is
disposed along the distal end 22 of the main body 20 and further
comprises an annular tip 50. The attachment port 40 is frictionally
engaged to the opening of the accessory channel 204 of the
endoscope 200, wherein the annular tip 50 is received and secured
in the opening of the accessory channel 204 of the endoscope 200
(see FIG. 6). The elongate medical device 100 (see FIG. 3) extends
through the access port 60 through the lumen 70, and through the
annular tip 50 as it passes into the endoscope 200. The flush port
30 is disposed between the proximal end 24 and distal end 22 of the
main body 20 and is configured for receiving fluids for flushing
around the elongate medical device 100 as it extends through the
lumen 70 of the main body 20.
[0024] Referring to FIG. 2, the lumen 70 of the hemostasis flushing
device 10 receives various medical devices, such as a probe,
needle, snare, clipping device, and other similar elongate devices.
The lumen 70 of the hemostasis flushing device 10 allows the
elongate medical device 100 to be freely inserted and removed
during medical procedures (FIG. 3). The lumen 70 extends from the
access port 60 of the hemostasis flushing device 10 to the annular
tip 50 of the hemostasis flushing device 10 (FIG. 4). Upon
insertion into the lumen 70 of the main body 20, the elongate
medical device 100 can be maneuvered longitudinally and
rotationally along the lumen 70 of the main body 20 into an
accessory channel 204 of the endoscope 200 (FIG. 6) for purposes of
introduction to a target site of the patient. The lumen 70 also
provides a reservoir for fluid passing out of the accessory channel
204 of the endoscope 200. Fluid in the lumen 70 is accumulated
until it is removed through the flush port 30, or the fluid is
removed through the annular tip 50 by detaching the entire
hemostasis flushing device 10 from the accessory channel 204 of the
endoscope 200.
[0025] In the embodiment illustrated in FIGS. 1-3, the hemostasis
flushing device 10 is elongate and has a cylindrical shape.
However, the shape of hemostasis flushing device 10 can include
other shapes, such as rectangular, elliptical, or any combination
thereof. The optimal length of the hemostasis flushing device 10 is
determined by considering factors such as design and material used,
as well by what is determined through experimentation to work best.
The hemostasis flushing device 10 may be preferably formed of
molded plastic material or metal which may be repeated sterilized
by medical providers during or between medical procedures.
Alternatively, the hemostasis flushing device 10 may be initially
sterilized and then disposed of.
[0026] As shown in FIG. 3, the access port 60 of the hemostasis
flushing device 10 includes a proximal end 64 and a distal end 62.
The distal end 62 of the access port 60 is disposed along the
proximal end 24 of the main body 20 and the proximal end 64 of the
access port 60 extends away from the proximal end 24 of the main
body 20. The access port 60 provides a passageway for receiving the
elongate medical device 100 as the device 100 extends into and
through the lumen 70 of the main body 20 (FIG. 5) and exits from
the annular tip 50 of the hemostasis flushing device 10 (FIG. 4).
After passing from the annular tip 50 of the hemostasis flushing
device 10, the elongate medical device 100 extends into the
accessory channel 204 of the attached endoscope 200 to reduce
bleeding at the target site (FIG. 7). One or more elongate medical
devices may be inserted through the access port 60 of the main body
70 to facilitate hemostasis in a gastrointestinal passageway. For
example, a probe and a needle may be inserted into the access port
of the hemostasis flushing device and fall within the scope of the
present invention.
[0027] Referring to FIG. 3, the hemostasis flushing device 10 can
include a supporting seal 80 disposed around the lumen 70 of the
main body 20. In the embodiment illustrated, the seal 80 is a
multi-part or composite seal comprising a proximal seal 84 and a
distal seal 82. Both the proximal seal 82 and distal seal 84 are
each configured to allow probes, needles, or similar elongate
medical devices extending through the lumen 70 of the hemostasis
flushing device 10 to pass through while maintaining an adequate
seal there about. In other words, each of these seals limits the
escape of fluids that may be present within the working channel of
the endoscope without inhibiting the insertion or movement of the
elongate medical device 100.
[0028] In the embodiment illustrated, proximal seal 82 comprises a
foam disk having an opening disposed therethrough or some other
suitable device for sealing about the elongate medical device 100.
The distal seal 84 of the support seal 80 comprises a pair of
sealing lips 83, 86, such as a duck bill valve, that are forced in
an open position by the elongate medical device 100 as it passes
through the access port 60 into the lumen 70 (FIG. 3). When the
elongate medical device 100 is removed from the access port 60, the
sealing lips 83, 86 are maintained in a closed position wherein any
internal reverse flow of blood is prevented from flowing out
through the access port 60 (FIG. 4). In the closed position, the
access port 60 allows any fluid accumulated in the lumen 70 of the
hemostasis flushing device 10 to be removed or flushed from around
the elongate medical device 100 by utilizing the flush port 30. The
supporting seal 80 also allows the pressure in the lumen 70 to
remain constant during medical procedure involving the elongate
medical device 100. This configuration can be of particular benefit
in preventing bodily fluids such as bile and blood from escaping
and contaminating the physician and the working environment.
[0029] In the embodiment illustrated, the access port 60 allows the
elongate medical device 100 to include a wide range of diameters
that are insertable into the access port 60 with ease.
Additionally, any blood which normally flows into the lumen 70 is
prevented from escaping to the exterior because of the seal 80. The
diameter of the access port 60 should be less than the diameter of
the longitudinally extending lumen 70 so as to insure that, upon
insertion of the elongate medical device 100 into the lumen 70, the
seal 80 will not expand against the walls of the main body 20
thereby increasing the difficulty of inserting the elongate medical
device 100 and the likelihood of decreasing pressure within the
lumen 70.
[0030] The design and configuration of these seals, including the
types of material from which they are manufactured, are well known
to those skilled in the art. An exemplary seal can include slits,
torn holes, arranged slits, or penetrable seals. Other seal
configurations include duckbill, membrane with a slit (e.g.,
polystyrene, silicone, or another compliant polymer material), foam
seal with small central aperture comprising an open cell or closed
cell (e.g., silicon, polyurethane, etc.), or other designs having
the ability to seal around the elongate medical device 100 to
prevent any proximally migrating fluid from exiting the hemostasis
flushing device 10. In another embodiment of the present invention,
the hemostasis flushing device 10 may include a tapered lumen 70
having a large diameter proximal end 24 and a small diameter distal
end 22 to facilitate the flow of blood from the proximal end 24 to
the distal end 22 of the hemostasis flushing device 10 during
flushing and to reduce the level of overflow fluid passing through
the ports 30, 60.
[0031] The flush port 30 comprises a proximal end 34 and a distal
end 32. The distal end 32 of the flush port 30 is engaged to the
main body 20 of the hemostasis flushing device 10. The proximal end
34 of the flush port 30 extends outwardly from the main body 20 of
the hemostasis flushing device 10. The flush port 30 provides a
passageway for a liquid, such as flushing fluid, to enter the lumen
70 of the main body 20 and pass to the target site of an active
bleed. Preferably, the flush port 30 facilitates attachment of
tubing or the like to permit insertion or withdrawal of fluids from
the lumen 70 during use.
[0032] The flush port 30 can operate as an inlet port or an outlet
port. As an inlet port, the flush port 30 operates as a pathway for
passing a flushing fluid into the accessory channel 204 of the
endoscope 200, and in particular, into the cavity between the
outside of the elongate medical device 100 and the inside of the
accessory channel 204. As an outlet port, the flush port 30
operates as a pathway for removing fluid from the accessory channel
204 of the endoscope 200 and the lumen 20 of the main body 20.
Additionally, the flush port 30 can be used to prevent fluid from
accumulating within the hemostasis flushing device 10 during active
bleeding at the target site of the gastrointestinal passageway. In
particular, the flush port 30 allows blood to be drawn from the
site during periods of active bleeding without the removal of any
complimentary medical devices.
[0033] The flush port 30 allows a medical device, such as a
syringe, needle or other infusion device, to be attached to the
flush port 30 to transport fluid to the target site. The flush port
30 provides a means of access for delivering flushing fluid to the
target site of a patient without having to remove the attached
endoscope 200. Thus, endoscopic procedures are easier to perform
due to the ability to flush fluid around the elongate medical
device 100 as it enters into the accessory channel 204 of the
endoscope 200. The flush port 30 further provides increased
pressure levels in the main body 20 to maintain pressure during
flushing of the target site of the patient. Alternatively, the
flush port 30 can be used to deliver medicine to the vascular
system of the patient.
[0034] In a preferred embodiment, the flush port 30 comprises a
seal 36 providing secured access to the main body 20 of the
hemostasis flushing device 10. The seal 36 of the flush port 30 is
configured and sized to receive an infusion device inserted into
the flush port 30 by a variety of methods. The infusion device,
such as a needle or syringe, can be inserted directly into the
flush port 30 wherein the infusion device is engaged by an interior
surface 57 of the seal 36. Upon insertion of the infusion device
into the flush port 30, the interior surface 57 of the seal 36
forms a seal with the infusion device providing secured access to
the lumen 70 of the main body 20. When the infusion device is
removed from the flush port 30, the seal 36 prevents fluid from
passing out through the passageway of the flush port 30. The seal
36 comprises a sealing mechanism 57, such as a septum, that forms a
liquid tight connection between the flush port 30 and the lumen 70
to prevent air and fluid from escaping from the lumen 70 of the
hemostasis flushing device 10.
[0035] The attachment port 40 has a proximal end 44 and a distal
end 42. The proximal end 44 of the attachment port 40 is engaged to
the main body 20 while the distal end 42 of the attachment port 40
is engaged to the annular tip 50. The annular tip 50 comprises a
proximal end 54 and a distal end 52. As shown in FIG. 1, the
proximal end 54 of the annular tip 50 is engaged to the distal end
42 of the attachment port 40. The attachment port 40 is
frictionally engaged to the opening of the accessory channel 204 of
the endoscope 200, wherein the annular tip 50 is received and
secured in opening of the accessory channel 204 of the endoscope
200 (see FIG. 9). The annular tip 50 and the attachment port 40
create a seal with the accessory channel 204 of the endoscope 200
and allows the inserted elongate medical device 100 to extend
through the lumen 70 of the hemostasis flushing device 10 into the
accessory channel 204 of the endoscope 200. Additionally, the
annular tip 50 provides a passageway for fluid as it travels
directly from the flush port 30 into the accessory channel 204 of
the endoscope 200 for flushing along the accessory channel 204 at
the target site. The annular tip 50 also provides a lumen for
receiving the inserted elongate medical device 100 as the device
100 extends from the lumen 70 and into the endoscope 200. The
attachment port 40 may be engaged to the accessory channel of any
suitable endoscope utilizing frictional engagement, locking
engagement or the like and fall within the scope of the present
invention.
[0036] FIG. 6 illustrates an exemplary endoscope 200 and a metal
insert 202 leading into the accessory channel 204 of the endoscope
200. The accessory channel 204 provides access to a working channel
(not shown) that extends distally through the interior of the
endoscope 200. The metal insert 202 has a lip 206 and may be
covered by an access port cover (not shown), which may be removed
to access the metal insert 202 and the accessory channel 204. FIG.
7 illustrates the hemostasis flushing device 10 frictionally
engaged or otherwise attached to the endoscope 200. In particular,
the attachment port 40 of the hemostasis flushing device 10 is
attached or removed from the lip 206 of the endoscope 200 via
frictional fit or the like. The annular tip 50 extends into the
accessory channel 204 of the endoscope 200 as the attachment port
40 engages the lip 206 of the endoscope 200 (FIG. 8-9).
[0037] An exemplary embodiment of an elongate medical device 100,
such as an injection needle (not shown) is insertable into the
access port 60 of the hemostasis flushing device 10. The injection
needle is used for the injection of fluids or medicine into the
gastrointestinal mucosa. The injection needle can be used in
conjunction with the hemostasis flushing device 10 to flush the
target injection area if desired. Additionally, the injection
needle can be navigated with another elongate medical device, such
as an inner injection catheter, through a gastrointestinal
passageway. The injection needle is navigated through a
gastrointestinal passageway toward a point of treatment. Once
positioned within the vessel, a second elongate medical device, the
inner injection catheter, can be placed over the injection needle
and moved along its length toward the point of treatment.
[0038] In another exemplary embodiment of an elongate medical
device 100, an argon plasma coagulator (not shown) is insertable
into the access port 60 of the hemostasis flushing device 10. The
argon plasma coagulator is used for open endoscopic applications in
conjunction with the hemostasis flushing device 10. The argon
plasma coagulator conducts monopolar electrosurgical current to
tissue via an ionized argon gas stream (argon plasma) for
hemostasis of large surface bleeding. Various probe devices that
are utilized with the argon plasma coagulator are insertable into
the access port 60 of the hemostasis flushing device 10 and
extended along the lumen 70 into the accessory channel 204 of the
endoscope 200. The probes can be introduced through the opening of
the access port 60 and passed through the lumen 70 of the main body
20. After extending through the lumen 70, the probes pass through
the opening of the annular tip 50 and into the accessory channel
204 of the attached endoscope 200. The probes can include diameters
of varying sizes. The access port 60 of the hemostasis flushing
device 10 can accommodate the varying sizes of the probes while
allowing the probes to inserted or removed with ease.
[0039] The elongate medical device 100 may be treated with a
hydrophilic coating or hybrid polymer mixture, such as those based
on polyvinyl puroladine and cellulose esters in organic solvent
solutions. These solutions make the medical devices particularly
lubricous when in contact with body fluids, which aids in
navigation. The coating may be applied by dipping, molding, or
spraying a suitable material, such as polytetraflouroethylene
(PTFE), urethane, and/or other polymeric coatings, directly to the
elongate medical device 100.
[0040] In another embodiment of the present invention, a sheath and
dilator (not shown) may be inserted into the access port 60 of the
hemostasis flushing device 10. The dilator can be received by a
sheath such that the sheath encloses the dilator, which can be
inserted through the access port 60 and passed through the lumen 70
and exited through the annular tip 50. After exiting the annular
tip 50, the sheath and dilator can be advanced through the
endoscope 200. The hemostasis flushing device 10 also prevents any
blood flowing between the attached devices from escaping out of the
flush port 30 or access port 60 as the devices, such as a sheath
and dilator, are extended through the lumen 70 of the hemostasis
flushing device 10.
[0041] Novel features of the disclosed hemostasis flushing device
10 can be successfully used in a variety of medical procedures. In
particular, the disclosed hemostasis flushing device 10 can be used
in medical procedures in which one or more elongate hemostasis
instruments such as a needle or probe needs to be inserted into the
endoscope 200 or other medical instrument.
[0042] The above figures and disclosures are intended to be
illustrative and not exhaustive. This description will suggest many
variations and alternatives to one of ordinary skill in the art.
All such variations and alternatives are intended to be encompassed
within the scope of the attached claims. Those familiar with the
are may recognized other equivalents to the specific embodiments
described herein which equivalents are also intended to encompass
by the attached claims.
* * * * *